Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-64104

8.7 · HIGH

In the Linux kernel, the following vulnerability has been resolved: virt: sev-guest: Explicitly leak pages in unknown state When set_memory_{encrypted,decrypted}() fail, the user cannot know at w…

Published Jul 19, 2026CWE-401EPSS 0.17%

Overview

CVE-2026-64104 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

virt: sev-guest: Explicitly leak pages in unknown state

When set_memory_{encrypted,decrypted}() fail, the user cannot know at which

point the function failed, meaning that the pages are left in an unknown state

from the point of view of the caller.

Since the pages may be left in an unencrypted state, they are not suitable for

general use, and cannot be returned safely to the buddy allocator. Avoid the

issue by never freeing the pages, and then do the proper accounting by calling

snp_leak_pages().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/3d0cd0065deeb054b4b29236432e851806b7cc81Refgit.kernel.org/stable/c/bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0Refgit.kernel.org/stable/c/fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64104?

CVE-2026-64104 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.7 (HIGH).

How severe is CVE-2026-64104?

This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-64104?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-64104?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64104 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999